Allow a macro of "0" to mean "#if 0" for convenient elimination of

constants.

p4raw-id: //depot/perl@28038

diff --git a/lib/ExtUtils/Constant/Base.pm b/lib/ExtUtils/Constant/Base.pm
index 8dab240d2325b247e9987162ed7a46a47cda78e8..48e0c37691f588aa2ceb4f65a42913dc70456b9e 100644 (file)
--- a/lib/ExtUtils/Constant/Base.pm
+++ b/lib/ExtUtils/Constant/Base.pm
@@ -5,7 +5,7 @@ use vars qw($VERSION $is_perl56);
 use Carp;
 use Text::Wrap;
 use ExtUtils::Constant::Utils qw(C_stringify perl_stringify);
-$VERSION = '0.02';
+$VERSION = '0.03';
 
 $is_perl56 = ($] < 5.007 && $] > 5.005_50);
 
@@ -78,7 +78,7 @@ sub macro_to_ifdef {
        return $macro->[0];
     }
     if (defined $macro && $macro ne "" && $macro ne "1") {
-       return "#ifdef $macro\n";
+       return $macro ? "#ifdef $macro\n" : "#if 0\n";
     }
     return "";
 }